144640700644 has 12 divisors (see below), whose sum is σ = 276132246768. Its totient is φ = 65745773000.

The previous prime is 144640700639. The next prime is 144640700669. The reversal of 144640700644 is 446007046441.

It is a junction number, because it is equal to n+sod(n) for n = 144640700597 and 144640700606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643644282 + ... + 1643644369.

It is an arithmetic number, because the mean of its divisors is an integer number (23011020564).

Almost surely, 2^144640700644 is an apocalyptic number.

It is an amenable number.

144640700644 is a deficient number, since it is larger than the sum of its proper divisors (131491546124).

144640700644 is a wasteful number, since it uses less digits than its factorization.

144640700644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287288666 (or 3287288664 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 40.

The spelling of 144640700644 in words is "one hundred forty-four billion, six hundred forty million, seven hundred thousand, six hundred forty-four".